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<head>
    <meta charset="UTF-8">
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    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        function Person() { }
        function fn() {
            let name = 'zhufeng';
            let age = 13;
            let arr = new Array();
            for (let i = 0; i < 10000; i++) {
                arr.push(new Person());
            }
            return function () {
                console.log('hello', arr, name);
            }
        }
        let hello = fn();
        debugger
        hello();
        hello = null;
    </script>
</body>

</html>